Unreal Engine Issues
Unreal Engine Issues
HandleKismetEvent (console cmd 'ke'): GT-ALT deadlock when user function flushes async loading
UE - Core - Asset Loader - Apr 8, 2026Context In builds with the in-game console enabled, users can use the ‘ke’ command to execute UFUNCTIONS on any object:ke * MyFunc // run MyFunc() on ANY UObject with a ufunction with that name ke ...
[ALT] - UE56 Editor launched with -AsyncLoadingThread will trigger MTAccess
UE - Core - Asset Loader - Dec 10, 2025When launching the editor with the -AsyncLoadingThread command, the engine uses an asynchronous thread to load and instantiate UObjects. At this point, if the instantiated UObject contains an FData ...
Pie startup optimization: UWorld::PostDuplicate::ValidateTextureOverridesForPIE optimization
UE - Core - Asset Loader - Jul 29, 2024Here is a snap shot of the propose UDN change: TRACE_CPUPROFILER_EVENT_SCOPE(ValidateTextureOverridesForPIE); TSet<UMaterialInterface*> ProcessedMaterials;TArray<UPrimitiveComponent*> Components; ...
Loading blueprint with soft actor reference during PIE corrupts data
UE - Core - Asset Loader - Jun 13, 2024The Soft Object Path loading code has special case logic for loading from Play In Editor, which tries to remap paths from the editor version of a map to instead point to an actor in a specific clien ...
Use a shared context in Loading instead of copying the LinkerInstancingContext
UE - Core - Asset Loader - May 12, 2023Current LinkerInstancingContext are copying instead of being shared internally during loading which can induce a lot of memory usage when used with World Partition which can contains a lot of mappin ...
PIE Map and TSet Properties using TSoftObjectPtr Failing from Missing Rehash
UE - Core - Asset Loader - Apr 24, 2023There is an issue with PIE where sometimes TMap and TSet properties using TSoftObjectPtr or FSoftObjectPath values as keys don't work correctly. Items which are in the container aren't found despite ...